
# import time
#
# aaa = 'abxacdxabe'
# lst = {}
#
# start = time.time()
# for i in aaa:
#     lst[i] = 0
# for j in lst:
#     for i in aaa:
#         if j == i:
#             lst[j] += 1
# print(lst)
# time.sleep(1)
# end = time.time()
#
# print(end-start)

# import os
# for item in os.listdir(os.getcwd()):
#     print(item,os.path.isdir(item))

